Glossary of CCA,Conductance,Current,Cycle,Deep Discharge

CCA: Cold Cranking Amps is a rating used in the battery industry to define a battery`s ability to start an engine in cold temperatures. A great amount of amperes is needed to start the engine, but only for a short time.The actual rating is the number of amps that can be removed from a new fully charged Maintenance Free Lead Acid Battery at 0°F for 30 seconds while maintaining a voltage of at least 7.2 volts (for a 12-volt battery).As a Sealed Maintenance Free Battery ages with use, it may no longer be able to meet its original CCA rating.The higher the CCA rating, the greater the starting power of the Maintenance Free Battery.

Conductance: The ability to transmit current in a circuit or battery.

Container and Cover: The reservoir and lid containing the battery parts and electrolyte made from impact and acid-resistant material such as polypropylene.

Corrosion: The chemical or electrochemical reaction between a material, usually a metal, and its environment that produces deterioration of the material and its properties. The positive lead grids in a Sealed Maintenance Free Battery gradually corrode in service, often leading to a Maintenance Free Car Battery failure. Battery terminals are subject to corrosion if they are not properly maintained.

Current: The rate of flow of electricity, or the movement of electrons along a conductor. It is comparable to the flow of a stream of water. The unit of measure for current is the ampere.

Current (Alternating) (AC): A current that varies periodically in magnitude and direction. A battery does not deliver alternating current.

Current (Direct) (DC): An electrical current flowing in an electrical circuit in one direction only. A secondary battery delivers direct current and must be recharged with direct current in the opposite direction of the discharge.

Cycle: In a battery, one discharge plus one recharge equals one cycle.

Deep Discharge: State in which a cell is fully discharged using low current, so that the voltage falls below the final discharging voltage.

Deep-Cycle Maintenance Free Lead acid battery: Battery that provides a steady amount of current over a long period of time, provides a surge when needed and is designed to be deeply discharged over and over again.